Summary of Key Points Core Viewpoint - A new round of rainfall is expected in Beijing, with significant precipitation forecasted, particularly in mountainous areas, leading to potential geological hazards and traffic disruptions [3][6][8]. Weather Forecast - Tonight, the weather will transition from clear to overcast with scattered thunderstorms, and the minimum temperature will be 25°C. Tomorrow, there will be overcast skies turning to heavy rain, with some areas experiencing torrential downpours and weak thunderstorms, with a maximum temperature of 29°C [1][3]. - The heaviest rainfall is anticipated from tomorrow evening to night, with areas like Fangshan, Mentougou, and Haidian expected to see particularly intense rainfall [2][3]. Rainfall Warnings - The Beijing Meteorological Station issued a blue rainstorm warning earlier today, indicating that significant rainfall is expected across the city, with some areas potentially receiving over 100mm [4][7]. - Geological disaster risk warnings have been issued, with a yellow alert for areas at high risk of landslides and mudslides due to the expected heavy rainfall [6][7]. Traffic Impact - The anticipated heavy rainfall is likely to adversely affect traffic conditions during the morning and evening rush hours next week, with warnings about reduced visibility and slippery roads [5][6]. Geological Hazard Alerts - Multiple districts, including Changping and Huairou, have issued orange alerts for mountain flood risks, indicating a high likelihood of such disasters due to saturated soil conditions [8][9]. - The risk of geological disasters, including landslides and mudslides, is particularly high in several districts, necessitating public caution and preparedness [6][8].